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Improving the hydro...
Improving the hydrogen cycling properties by Mg addition in Ti-V-Zr-Nb refractory high entropy alloy
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- Montero, Jorge (författare)
- Univ Paris Est Creteil, ICMPE, UMR 7182, CNRS, 2 Rue Henri Dunant, F-94320 Thiais, France.
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- Ek, Gustav (författare)
- Uppsala universitet,Oorganisk kemi
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- Sahlberg, Martin, 1981- (författare)
- Uppsala universitet,Oorganisk kemi
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- Zlotea, Claudia (författare)
- Univ Paris Est Creteil, ICMPE, UMR 7182, CNRS, 2 Rue Henri Dunant, F-94320 Thiais, France.
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Univ Paris Est Creteil, ICMPE, UMR 7182, CNRS, 2 Rue Henri Dunant, F-94320 Thiais, France Oorganisk kemi (creator_code:org_t)
- Elsevier, 2021
- 2021
- Engelska.
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Ingår i: Scripta Materialia. - : Elsevier. - 1359-6462 .- 1872-8456. ; 194
- Relaterad länk:
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https://www.scienced...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- A novel high entropy alloy containing Mg and refractory elements has been prepared by mechanochemical synthetic method under inert atmosphere. The Mg0.10Ti0.30V0.25Zr0.10Nb0.25 alloy adopts a single-phase bcc lattice and can absorb hydrogen within 1 minute at room temperature forming a hydride phase with 1.7 H/M (2.7 wt.%) capacity. During the reaction with hydrogen the alloy undergoes a single-step and reversible phase transformation from bcc (alloy) to fcc lattice (hydride). The absorption/desorption cycling properties prove a small fading of the capacity for the first cycle followed by stabilization to 1.5 H/M (2.4 wt.%) for the next cycles. A simple comparison between this quinary HEA and the quaternary alloy containing only refractory elements Ti0.325V0.275Zr0.125Nb0.275 proves an important enhancement of the cycling properties by Mg addition. These insights seem to suggest that insertion of light-weighted metals such as, Mg, can guide future design of novel HEA with improved performances for hydrogen storage.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Nyckelord
- High entropy alloys
- Hydrogen absorption/desorption cycling
- Synchrotron-XRD
- In situ neutron diffraction
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- ref (ämneskategori)
- art (ämneskategori)
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